Added Dockerfile

Dockerfile

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+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+COPY webpage/package*.json ./
+
+RUN npm ci
+
+COPY webpage/ .
+
+RUN npm run build
+
+# Production stage
+FROM nginx:alpine
+
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 48763
+
+CMD ["nginx", "-g", "daemon off;"]